using System;
/*
 * $Id: ImgJBIG2.cs 106 2009-12-07 12:23:50Z psoares33 $
 *
 * This file is part of the iText project.
 * Copyright (c) 1998-2009 1T3XT BVBA
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * you must retain the producer line in every PDF that is created or manipulated
 * using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */

namespace iTextSharp.text
{

    /**
    * Support for JBIG2 images.
    * @since 2.1.5
    */
    public class ImgJBIG2 : Image
    {

        /** JBIG2 globals */
        private byte[] global;
        /** A unique hash */
        private byte[] globalHash;

        /**
        * Copy contstructor.
        * @param    image another Image
        */
        ImgJBIG2(Image image)
            : base(image)
        {
        }

        /**
        * Empty constructor.
        */
        public ImgJBIG2()
            : base((Image)null)
        {
        }

        /**
        * Actual constructor for ImgJBIG2 images.
        * @param    width   the width of the image
        * @param    height  the height of the image
        * @param    data    the raw image data
        * @param    globals JBIG2 globals
        */
        public ImgJBIG2(int width, int height, byte[] data, byte[] globals)
            : base((Uri)null)
        {
            type = Element.JBIG2;
            originalType = ORIGINAL_JBIG2;
            scaledHeight = height;
            this.Top = scaledHeight;
            scaledWidth = width;
            this.Right = scaledWidth;
            bpc = 1;
            colorspace = 1;
            rawData = data;
            plainWidth = this.Width;
            plainHeight = this.Height;
            if (globals != null)
            {
                this.global = globals;
                //try
                //{
                //    this.globalHash = PdfEncryption.DigestComputeHash("MD5", this.global);
                //}
                //catch
                //{
                //    //ignore
                //}
            }
        }

        /**
        * Getter for the JBIG2 global data.
        * @return   an array of bytes
        */
        public byte[] GlobalBytes
        {
            get
            {
                return this.global;
            }
        }

        /**
        * Getter for the unique hash.
        * @return   an array of bytes
        */
        public byte[] GlobalHash
        {
            get
            {
                return this.globalHash;
            }
        }
    }
}
